Television system



March 26, 1940. R U T 2,195,103

TELEVISION SYSTEM Filed March 26, 1936 /3 P/CTURE .SYA/CHRON/ZER 1 5 7 9 J'RAMSM/TTL-R RECORD/N6 R'CE/VER 3 I 1/ I "17M CABLE 0/? i P/CH/Rf 17 RHA) mMsM/rrm 106a Moouur/zw smc/mo/v/z/ma MEANS INVENTOR RUDOLF URTEL BY/ Q ATTORNEY Patented Mar. 26, 1940 UNITED STATES ATEN OFFICE" TELEVISION sYs'rEM Rudolf Urtel, Berlin, Germany, assignor to Telefunken Gesellschaft fur Drahtlose Telegraphic,

Germany b. H., Berlin," Germany, a corporation of 1936, Serial No. 70,906.

In Germany March 26,1935 in Claims. (01. 178 -10,; 1

Application March 26 The present invention relates to'a method for reporting any occurrences or incidents-bywayof television, more particularly by the use of cathode. ray scanning devices. Such reporting apparatusshould be as light as possible, and trans portable. Hither-to, this requirement could not be complied with in view of the fact that even by using cathode, ray scanning devices, the transmitter arrangements were still rather cumbersome. Moreover, the keeping in step of the transmitter arrangement forinstance of the deviation potentials or deviation currentsof the cathode ray scanner demands the production ofha very and of a reporting apparatus in alternating'connection with the main transmitter. The invention will be better understood with reference to the drawing which shows in block diagram an embodiment of my invention.

The synchronizing impulses are produced at the main transmitter 9 in the known manner by means of a local synchronizing means II such as a scanning disk or the like, and said impulses are radiated as modulation of the main trans mitter. It is hereby immaterial whether a single or multiple channel method is utilized. The main transmitter will be received at the place of reporting such as by the-local receiver 1, and the synchronizing impulses are separated from the remaining modulation (picture or sound) in the I known manner at 5, and utilized for synchronizing the relaxation arrangement or the like of the image recording apparatus l. The picture modulation produced by the latter is now sent out by the modulator 3 to the main transmitter across cable or relay transmitter l1.

What I claim is:

l. A television system comprising a main transmitter, means to medulate the transmitter by synchronizing signals, an auxiliary television transmitter, means to receive synchronizing signals from the main transmitter, means to isolate the received synchronizing signals, means to utilize the isolated synchronizing signals for synchronizing the auxiliary transmitter, means to transmit picture signals from the auxiliary transmitter to the main transmitter and means to modulate the main transmitter by the picture signals transmitted from the auxiliary transmitter,

2. In a television system wherein is provided a 7 main, transmitter, and anauxiliary transmitter remote therefrom, the method of transmitting electro-optical representations of a scene from the main transmitter, which comprises the steps of transmitting synchronizing energy from the main transmitter, receiving the synchronizing energy at the auxiliary transmitter, synchronizingthe auxiliary-transmitter by the received synchronizing energy, transmitting energy representative of theobject to be transmitted from the auxiliary transmitter to j the main transmitter and modulatingthe main transmitter by the energy transmitted from the auxiliary transmitter.

3; A television system comprising a main transmitter, means for transmitting synchronizing energy from said transmitter, an auxiliary transmit'ter,, means to receive the transmitted synchronizing energy at the auxiliary transmitter,

means to synchronize the auxiliary transmitter .by the received synchronizing energy, means to transmit signals representative of an image to be. transmitted from the auxiliary transmitter to the main transmitter and means to transmit from the maintransmitter energy representative of the signals transmitted by the auxiliary transmitter. 4. The method of televisiontransmission which comprises the steps of'generating at a local position synchronizing signals, remotely producing signals representative of an image to be transmitted, synchronizing the remotely produced image'signals by the locally generated synchronizing signals, transmitting the remotely produced signals to the localtpos'ition, receiving the transmitted signals at the local position, and simultaneously transmitting at the local position both-the locally generated synchronizing signals and the received remotely produced signals.

5. A television transmitting system comprising means to generate synchronizing signals at a local position, means remote from the local position for producing signals representative of an image to be transmitted, means to synchronize the image signal, producing means by the locally generated synchronizing signals, means to trans- I mitthe remotely produced signals to the local position, means to receive the transmitted signals at the local position and means to transmit" at the local position simultaneously both the locally generated synchronizing signals and the received remotely produced signals. j

6; The method of television transmission which comprises the steps of generating at a local position synchronizing signals, remotely producing signals representativeiof an image to be transmitted, synchronizing the remotely produced signals by the locally generated synchronizing sigauxiliary transmitter, means to receive the trans- I mitted synchronizing energy at the auxiliary transmitter, means to synchronize the auxiliary transmitter by the received synchronizing energy, means to transmit signals representative of an image to be transmitted from the auxiliary transmitter to the main transmitter, and means to retransmit from the main transmitter the transmitter signals from he auxiliary transmitter. 1

8. A television system comprising a main transmitter, means to modulate the transmitter by' synchronizing signals, an auxiliary television transmitter, means to receive synchronizing signals from the main transmitter, means to isolate the received synchronizing signals, means to utilize the isolated synchronizing signals for synchronizing the auxiliary transmitter, means to receive the signals transmitted from the auxiliary transmitter at the main transmitter, and means to retransmit the received signals from the main transmitter.

9. A television system comprising a main transmitter, means for transmitting synchronizing energy from said transmitter, an auxiliary transmitter, means at the auxiliary transmitter to receive the transmitted synchronizing energy, means to synchronize the auxiliary transmitter by the received synchronizing energy, means to transmit signals representative of an image to be transmitted from the auxiliary transmitter to the main transmitter, means to receive the signals transmitted from the auxiliary transmitter at the main transmitter, and means to retransmit the received signals from the main transmitter.

10. In a television system wherein is provided a maintransmitter, and an auxiliary transmitter remote therefrom, the method of transmitting electro-optical representations of a scene from the main transmitter, which comprises the steps of transmitting synchronizing energy from the main transmitter, receiving the synchronizing energy at the auxiliary transmitter, synchronizing the auxiliary transmitter by the received syn-. chronizing energy, transmitting energy representative of the object to be transmitted from the auxiliary transmitter to the main transmitter, receiving the transmitted energy from the auxiliary transmitter at the main transmitter, and retransmitting from the main transmitter the received signals.

RUDOLF URTEL. 

